Subject	I think he was asking for the letter.
Posted by	Kenny on December 02, 2004 at 4:22 PM
	This message has been viewed 405 times.
In Reply To	It is a Rockwell Superficial hardness test. It involves usi posted by Ash's Z on December 02, 2004 at 04:11 PM
Message	" Regular Rockwell hardness testing-Measures the bulk hardness of the material. There are separate scales for ferrous metals, nonferrous metals, and plastics. Common regular Rockwell hardness scales include B and C for metals and M and R for polymers. Superficial Rockwell hardness testing-A more surface sensitive measurement of hardness than for the regular Rockwell scales. This technique is useful for samples with hardness gradients at the surface, to test small areas, and for thin samples. Superficial Rockwell hardness scales are N and T for metals and W, X, and Y for nonmetallic materials and coatings. " [ http://www.mee-inc.com/rockhar.html ] mkay? Kenny... PETZ Member #5 SteamyZ. Never had did me wrong. - SL103 07/06/04 11:58:15
Follow Ups	Nissan Soft Valves. I've been working on putting my TT - Ash's Z 14:26:31 12/02/04 Nice. (n/m) - YugoBernie (NoVA) 14:33:56 12/02/04 awesome info. thanks for sharing with the group! (n/m) - stockplayerz (NYC) 14:37:25 12/02/04 interesting. (n/m) - Dallas DamonZ 14:38:17 12/02/04 thank you (n/m) - Guapo 14:47:26 12/02/04 nice (n/m) - aliaZ 14:50:25 12/02/04 Very educational...Thanks for sharing! (n/m) - TheTwinZ (Peru) 14:53:05 12/02/04 nice. (n/m) - Milo (Sport Z Magazine) 14:53:05 12/02/04 Very interesting... thanks for the post (n/m) - CarlCuro 14:57:27 12/02/04 Nice! (n/m) - Spongerider :) 14:58:29 12/02/04 First time I've seen hard evidence of soft valves. (n/m) - SactoTodd 15:05:33 12/02/04 chuckle;) (n/m) - UnrulyZX 15:34:07 12/02/04 VTF (n/m) - Pats300zx 15:18:40 12/02/04 It'd be nice to get this into the FAQ's, or move it to TECH - Dave N 15:21:19 12/02/04 Bookmarked. (n/m) - Kenny 15:26:35 12/02/04 Do you remember what scale the Hardness machine was on? (n/m) - yawgm0thzx 15:30:47 12/02/04 Without the alphabetic value, the number is worthless. - Kenny 15:33:13 12/02/04 I knew MSE 201 was good for something lol. - yawgm0thzx 23:14:59 12/03/04 It is a Rockwell Superficial hardness test. It involves usi - Ash's Z 16:11:28 12/02/04 I think he was asking for the letter. - Kenny 16:22:34 12/02/04 That is unknown to me. I had the test performed by someon - Ash's Z 17:05:03 12/02/04 Wasn't busting your chops =). Just curious. (n/m) - Kenny 17:19:00 12/02/04 Assuming the valves are chrome stainless, it would - Guy (SoCal) 17:29:23 12/02/04 Ash, on a non-soft valve head, approximately how much - AzHeat 15:37:26 12/02/04 Interesting that you ask that question, really... >> - Ash's Z 15:56:20 12/02/04 Why was the peacemaker blew-up? Valve lash? - timz 16:54:26 12/02/04 The Ferrea valves wore out just like the soft valve I showed - Ash's Z 17:13:53 12/02/04 did Ferrea compensate you for your troubles? - aliaZ 17:33:13 12/02/04 Not for any of the labor. They were open to producing the - Ash's Z 18:59:54 12/02/04 Huh? - timz 20:15:30 12/02/04 The tops of the solid lifters were dished with a difference - Ash's Z 18:42:05 12/03/04 I just spoke with my engine builder who did my heads. - AzHeat 21:20:51 12/02/04 I told you Mike your engine will be a disaster - HakenTT 22:33:52 12/02/04 LOL, well, there is a big difference between an architect - Ash's Z 18:32:49 12/03/04 I would put my machinist engine builder against yours - AzHeat 23:47:18 12/03/04 You should make silicone nitride valves. Strong, light, and - Scotts94z32 15:43:45 12/02/04 ibCarbonFiberJoke (n/m) - Kenny 15:48:29 12/02/04 ibCarbonFiberTurningIntoOxideDust... ;) (n/m) - Scotts94z32 16:58:26 12/02/04 I have 16 titanium valves that came out of a Nascar in my - Ash's Z 15:59:05 12/02/04 Excellent write-up, Ash. VTF for sure. (n/m) - whitepearlz 15:57:31 12/02/04 Very nice, thats what happened to my NA's engine... - DougZXTT 17:52:33 12/02/04 nice post (n/m) - Spee 18:32:32 12/02/04 vtf i hope thats not happening to my na **: ) (n/m) - 90BlkZ18 22:23:44 12/02/04
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